Carmichael argued the drugs may well have been planted, citing "the underhanded targeting of Ms. McGowan" by Weinstein.

"It is now public knowledge that Weinstein employed underhanded tactics to 'silence' his victims," she wrote, citing reports that Weinstein hired private investigators to trail women who had accused him of mistreatment.

McGowan was one of the first actresses to accuse the now-disgraced producer of sexual abuse.